Mathematician Craig Larson (Virginia Commonwealth University) writes:
There's an obscure comment of Crick in his autobiography ("What Mad Pursuit"), regarding his friend Kreisel, reiterated in Crick's Kreiselania piece, regarding Wittgenstein's idea for mining the Baltic in WWII (Crick worked on magnetic mines during the war):
"I never did discover exactly what Kreisel was doing at West Leigh. There was a war on and I had plenty of urgent problems of my own to deal with. I believe that one of his first efforts was to apply the methods of Wittgenstein (whom he had known at Trinity) to the problem of mining the Baltic. I would dearly like to read this paper but Collingwood was believed to have locked it away in his safe (could it have been a threat to security?) and it has almost certainly not survived."
In the autobiography, Crick calls it Kreisel's "first paper".
Maybe one of your readers might add some further explanation? Googling did not help.
Comments are open; submit your comment only once, it may take awhile to appear, as I have a busy day.